Laboratory chemistry table



April 5, 1932. c. w. GRAY ET AL LABORATORY CHEMISTRY TABLE Filed Aug. 8. v1927 Inventors. l Carl Zl/Zlam Gray' Mar Jonesurck Patented Apr. 5, 1932 UNITED STATES PATENT OFFICE CARL WILLIAM GRAY, OF LANKERSHIM, MARY J ON ES BURDICK, OF ALHAMBRA,MILO

STUART MOORE, F LOS ANGELES, AND CLAUDE W. SANDIFUR, OF LANKERSHIMQ CALIFORNIA LABORATORY CHEMISTRY TABLE Application filed August 8, 1927. Serial No. 211,388.

'I provide an improved chemistry table which will be simple in construction, sanitary and afford all conveniences to a person using the same.

A more particular object is to provide a table of the character stated in sections which may be readily taken apart and put together for cleaning purposes, repairs, or assembly in multiples of section lengths.

The invention consists in the novel features of construction, combination of elements and arrangement of parts all as hereinafter more fully described and claimed.

Other objects, advantages, and features of invention may appear from the accompany- 20 ing drawings, the subjoined detailed descrip tion and the appended claims.

The invention is illustrated in the annexed drawings which forms a part of this specification and in which;

Figure 1 is a fragmentary side elevation of our chemistry table with the doors of two of the lockers removed and the hopper partly broken away and sectioned to show the interior thereof.

Fig. 2 is a view of the table shown partly in end elevation and partly in vertical cross section.

Fig. 3 is a fragmentary horizontal section of the table on enlarged scale and taken Von line m3, of Fig. 2. Dotted lines indicate an open position of the locker door.

Fig. 4 is an enlarged fragmentary cross section of the trough. y

Fig. 5 is a fragmental plan view of the top shelves.

Our chemistry table includes a body 1, a top 2, a top shelf member 3, a trough 4, and a hopper 5.

The body 1 is preferably made in bore shaped sections 6. that are arranged end to end and back to back on each side of the table; the sections at opposite sides of the table being arranged back to back. The sections at each side of the table are detachably secured together by rail bolts 7 engaging the abutting ends of said sections, while the adjoining sections at oppositesides of the table are detachably secured together by means of stove bolts 8 extending through the abutting back walls of the sections. Each section 6 is divided into a plurality of lockers 9 which are closed by hinged doors 10. Each `locker 9 is constructed with a plurality of superimposed sliding racks 11, 12 and 13, and a drawer 14 above the uppermost rack 13 and open to the space forming the locker, there being sliding writing shelves 15 above the drawers in the top of certain of the lockers. The racks 11, 12 and 13 are of a length slightly less than the depth of the lockers 9, so that when the racks are in the lockers, with their forward ends against the inside of the locker doors,` the rear ends of the racks will rest slightly forwardly of the back walls of the lockers, providing air circulating spaces 16, 17 and 18 between the back .walls and the rear ends respectively of said racks. The bottom walls of the lockers are provided with air inlets 19 which communicate with the spaces 16 and admit air into the lockers from air chambers 28. The upper inner corners of the body sections 6 are cut away or lformed with rabbets 20 to receive the removable trough 4. The drawer 14 of each locker 9 has bumpers 21 on the forward end thereof which are engaged by the locker door 10 when closed whereby the drawer is moved inwardly until arrested by engagement of the inner side` of the forward end wall of the drawer with an angular stop 22 secured to the forward wall of the locker above the locker door. The drawer 14 is of such length that when moved inwardly by the locker door against the stop 22, the inner' end of the drawer will stop a short distance forwardly of one side of the trough 4, providing an air circulating space 23 between said inner end of the drawer and side of the trough. The writing shelves 15 are of such thickness as to provide air circulating spaces 24 between their upper surface and the lower surface of the table top 2. Vents 25 are also provided in the front walls of the body sections 6 immediately under the writing shelves 15. Vents 26 are also provided in the front walls 'Ill ' with air inlets 30 which are covered with wire mesh 31 on the inside of the frame. `By removing the frame 27 from the forward edge of the body 1 a toe space isprovided to.; receive the toes of a person using the table and thereby permits such person to standclose tothe table and aord easy access to the shelf 3.

Atmospheric air first enters the base chamber 28 through inlets 30 and passes through ports 19 and space16 into the space 32 in the lower part of the lockers 9 betweenthe racks 11 and 12. From the space 32 the air circulates through space 17 into space 33 between the.l racks 12 and 13. From the space 33 the air passes through space 18 into the space 34 between the upper rack 13 and the drawer 14. From the space 34 the air passes through space 23 into the space 35 in the top of the locker and then out through space 24 and vents 25 or vents 26 into the atmosphere. The circulation of air through the lockers carries off any odors of the ychemicals that may remain on or in any of the usual equipment carried by the racks 11, 12 and 13 and in the drawer 14.

The table top 2 of the assembled laboratory table is made in two sections a which are placed on the top of the body sections 6 extending the full length of the table with their inner side edges spaced apart at a distance suicient to receive the trough 4, as shown in Fig. 2.

Gas piping 36 is installed inthe upper part of the body sections 6 before the table top is fplaced on top of said sections and holes 37 areprovided in the table sections near the inner edges'thereof through which holes extend the upper ends of said piping at opposite sides of the trough 4,` there being gas cocks 38 connected to said upper ends of said piping.

' The trough 4 extends the entire length of the table with its delivery end 39 extending 'into the top of the hopper 5, the bottom 40 of the trough inclining downwardly to its delivery end. The trough is lined with a lead lining 41. Quarter round gaskets V42 are placed upon the upper side edges of the trough 4 against the inneredges of the table top sections a to prevent leakageat the edges of the trough into the body 1. Said gaskets Y have -ropes 43 and 44 fitted therein which contact with the upper edges of the trough and the inner edges of they top sections a relends thereof, transverse Vertical partitions 48 extending entirely across the upper side of Ysaid. shelves, and longitudinal vertical partitions 49 extend from the transverse partitions 48. The uprights span the space across 75 the trough 4 and rest upon the inner edges of the tabletopsections a'. "Shelf compartments 50 are formed between the partitions 48 which compartments extend across the shelves 46 and are open at both sides of the so shelves. Each longitudinal partition 49 divides the shelves 46 into two shelfv compartments 51 for bottles atnopposite sidesfof the table, said compartments beingnopen at the sides of theshelves. The shelfV member 3 ,exsr 85 tends the entire length ofthe table with'the end uprights 45 Vof the shelf member .resting upon the table top 2 near the ends thereof. rlherefis one shelf compartment 50. andfour shelf compartments 51 oneach shelf :46that 90 are arranged on every two sections assembled back to back, two of 4the compartments-51 being arranged at each side ofthe .compartment 50.

There Vare two gas lcocks 38 on one side y01H95 each ofthe end uprights 45, one'for each side of the table.

A waterpipe 52 extends the-entire'length of the shelf member 3 through-the uprights-45 adjacent the under side of the shelves 46,` on end of which pipe has connected thereto: a faucet 53, the mouth of which is located directlyY over the hopper 5. 'Water cocks `54 are connected at intervals Valong the pipe 52 preferablyadj acent the inside of the-end upf rights 45 and adjacent both sides of the remaining uprights, so that there aretwo cocks upder eachv shelf section 46 at the ends thereo Y v Thehopper 5 Vmay be detachably secured t 110 one end of the bodyl by screws or -bolts and supported on legs 55. The hopperis lined with a lead lining 56 and adrain pipe 57 Vleads from the bottom of the hopper,therebeing a bee hive strainer 58 in the 'bottom of the'lns hopper connected to said ,drain pipe. heavy copper screen 59 .is placed inthe top of the hopper 5 upon which the contents of the trough 4 are first delivered.

Ne claim: i @3120 1. .A table of the character fset forthv comprising body sections `provided with a top and a plurality of lockers; a base frame on which said body sections rest, the forward wall of said base framebeing removed from the for 125 ward edge of said body sections to provide a toe space; drawers slidably mounted in each of said lockers and open to the space forming vthe lockers; there being air inlets in the lower end of said bodysection opening into each `130 of said lockers from said toe space and air outlets from each of said lockers at the upper end of said body sections underneath the top thereof to provide means whereby said lockers and drawers may be ventilated.

2. A table as disclosed comprising a body having a locker therein, racks slidably mounted in said locker, the racks being of a length slightly less than the depth of the locker so as to provide spaces between the rear end of the racks and the rear wall of the locker when the locker door is closed against the forward ends of the racks, the bottom wall of the locker having an air `inlet communicating with the space between the rear end of the lowermost rack and the rear wall of the locker, the locker having an air outlet in the upper part thereof and a top on said body.

3. A table comprising a body formed with a locker, a drawer in the upper part of the locker, bumpers on the forward end of the drawer to be engaged by the door when closed to push the drawer into the locker, a stop for engaging the drawer when pushed in by the locker door, the drawer being of such length that when pushed in by the door the rear end of the drawer will rest slightly forwardly of the rear of the locker to provide an air circulating space, the locker being provided with an air inlet below said space and with an air outlet above said space, and a top on said body.

4. In a laboratory chemistry table, a trough structure including a lining for said trough extending over the upper edges thereof; and gasket members connected to said trough and mounted on the overlap-ping edges of said lining.

In testimony whereof, we CARL WILLIAM GRAY and MARY JoNns BUILDIGK have hereunto set our hands at Los Angeles, California, this 20th day of June, 1927 and MILo STUART Moonn has hereunto set his hand at Los Angeles, California, this 23rd day of June, 1927 and CLAUDE WV. SANDIFUR has hereunto set his hand at Miami, Indiana, this 29 day of July, 1927.

CARL WILLIAM GRAY. MARY JONES BURDICK. MILO STUART MOORE.

CLAUDE IV. SANDIFUR. 

